But notice that the actual error number (547) is different from the RAISERROR message number (50000) and that the actual line number (9) is different from the RAISERROR line number (27). How does a Dual-Antenna WiFi router work better in terms of signal strength? And, as if that is not enough, there are situations when ADO opens a second physical connection to SQL Server for the same Connection object behaind your back. Would animated +1 daggers' attacks be considered magical?

Note: you can invoke a scalar function through EXEC as well. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Or it can cause a transaction to run for much longer time than intended, leading to blocking and risk that the user loses all his updates when he logs out. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

The bottom line: Only the COMMIT at the outermost level of a set of nested transactions actually commits the transaction.A ROLLBACK is an entirely different matter. Knowledge Base article 306649 "PRB: Error When You Implement Nested Transaction with OLE DB Provider for SQL Provider" describes this problem. The examples are based on a table I created in the AdventureWorks2012 sample database, on a local instance of SQL Server 2012. The return value from a stored procedure should only serve to indicate whether the stored procedure was successful or not, by returning 0 in case of success, and a non-zero value

CREATE PROCEDURE usp_ExampleProc AS SELECT * FROM NonexistentTable; GO BEGIN TRY EXECUTE usp_ExampleProc; END TRY BEGIN CATCH SELECT ERROR_NUMBER() AS ErrorNumber ,ERROR_MESSAGE() AS ErrorMessage; END CATCH; Uncommittable Transactions and XACT_STATEIf an The statement has been terminated. Invocation of dynamic SQL. Errors trapped by a CATCH block are not returned to the calling application.

Even if you've been using the TRY…CATCH block for a while, the THROW statement should prove a big benefit over RAISERROR. How long could the sun be turned off without overly damaging planet Earth + humanity? I give more attention to ADO, for the simple reason that ADO is more messy to use. Get started Top rated recent articles in Database Administration Azure SQL Data Warehouse: Explaining the Architecture Through System Views by Warner Chaves 0 SQL Server Access Control: The Basics by

The overall algorithm is very similar. For the same reason, don't use constraints in your table variables. Asking for a written form filled in ALL CAPS Word for "to direct attention away from" Why is ACCESS EXCLUSIVE LOCK necessary in PostgreSQL? What is actually happening when you pool mine?

A similar reasoning applies when it comes to COMMIT TRANSACTION. Garth www.SQLBook.com Discuss this article: 2 Comments so far. asked 5 years ago viewed 8035 times active 8 months ago Get the weekly newsletter! Linked 5 Check if a linked SQL server is running Related 840How to perform an IF…THEN in an SQL SELECT?1675Add a column, with a default value, to an existing table in

state A value that indicates the invocation state of the error. With one exception: if you raise an error yourself with RAISERROR, the batch is not aborted. FETCH from cursor. That is the autocommit mode.

These requirements tend to conflict with each other, particularly the requirements 2-6 tend to be in opposition to the requirement on simplicity. If you run the procedure from Query Analyzer, you will see something like: (19 row(s) affected) Server: Msg 547, Level 16, State 1, Procedure some_sp, Line 4 UPDATE statement conflicted with IF (XACT_STATE()) = -1 BEGIN PRINT N'The transaction is in an uncommittable state.' + 'Rolling back transaction.' ROLLBACK TRANSACTION; END; -- Test whether the transaction is committable. Mixed DML Operations in Test Methods - system.RunAs(user) - but why?

Revision History 2009-11-29 - Added a note that there is now at least an unfinished article for SQL 2005 with an introduction that can be useful. 2006-01-21 - Minor edits to Modularity, take two. Share a link to this question via email, Google+, Twitter, or Facebook. If the return value from the called procedure is -1, or if @@ERROR was greater than 0, the procedure assumes that an error has occurred that requires us to stop further

You can trap some errors in Transact-SQL code, but other errors are fatal to a batch or transaction. This article is not apt if you are using SQL 2005 or later. Has any US President-Elect ever failed to take office? I don't have a complete article on error handling for SQL 2005, but I have an unfinished article with a section Jumpstart Error Handling that still can be useful.

How it can be done? What do you call "intellectual" jobs? I'll call them the single-level and multi-level models.The Single-Level ModelIn the single-level model, if a transaction is already in place, the procedure will not start a new one; instead, the transaction No error, no result set.

IF @mode NOT IN ('A', 'B', 'C') BEGIN RAISERROR('Illegal value "%s" passed for @mode.', 16, -1, @mode) RETURN 50000 END INSERT #temp (...) SELECT ... The reason I do this is to demonstrate the difference between what the actual values are and what the RAISERROR statement returns, as you'll see shortly. All client libraries I know of, permit you to change the command timeout. Right after the failed call to the procedure, use @@ERROR to indicate that a failure occurred.Some Rules for Handling Errors with Nested Stored ProceduresNesting stored procedures means you have stored procedures

Copy BEGIN TRANSACTION; BEGIN TRY -- Generate a constraint violation error. He might have some error-handling code where he logs the error in a table. SELECT @err = @@error IF @err <> 0 RETURN @err END This procedure has an assertion that checks that there is an active transaction when the procedure is invoked. I recommend that you use local cursors, which you specify by adding the keyword LOCAL after the keyword CURSOR.

The procedure aborts processing immediately after the error and the PRINT statement is not executed. If the client code started the transaction, none of the procedures should roll back.One final consideration: When an error occurs that aborts a transaction, the current and all calling batches abort msg_str A custom message that is not contained in sysmessages. For example, if your application allows users to type in the name of the table on which a query is based you can verify itâ€™s existence before referencing it with dynamic

INTO var_list statements that retrieve no rows. it is hard/impossible to derive the exact nature of the error. Also, exchange of stored procedures might be hampered. HANDLER Syntax 14.6.7.2 DECLARE ... But alas! DECLARE CONTINUE HANDLER FOR SQLWARNING BEGIN -- body of handler END; NOT FOUND: Shorthand for the class of SQLSTATE values that begin with '02'. So far, so good. To detect this condition, you can set up a handler for it (or for a NOT ...

It is worth noting that using PRINT in your CATCH handler is something you only would do when experimenting. My task was to come up with a way to gracefully exit from the stored procedures when non-fatal errors were detected so I could roll back the transaction. But we also need to handle unanticipated errors. The idea is that I want the error checking as un-intrusive as possible so that the actual mission of the procedure is not obscured. EXECUTE usp_MyErrorLog; IF XACT_STATE() <> 0 R...

Such a procedure is part of a larger operation and is a sub-procedure to a main procedure. Print this Article. Conditional tests for IF and WHILE. The statement has been terminated. A similar reasoning applies when it comes to COMMIT TRANSACTION. Why won't a series converge if the limit of the sequence is 0? But for some reason, this error is not raised when the procedure is invoked from a trigger. (It is documented in Books Online, so it is not a bug.) This could This value is not use...